<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">后台管理系统</h3>
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" size="large" autocomplete="off" placeholder="账号">
          <!--
          <template #prefix><svg-icon icon="password"/></template>
          -->
          <template #prefix>
            <el-icon class="el-input__icon"><User /></el-icon>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" size="large" autocomplete="off" placeholder="密码" @keyup.enter="handleLogin">
          <!--
          <template #prefix><svg-icon icon="password"/></template>
          -->
          <template #prefix>
            <el-icon class="el-input__icon"><Lock /></el-icon>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" size="large" style="width: 100%;" @click.prevent="handleLogin">登录</el-button>
      </el-form-item>
    </el-form>

    <div class="el-login-footer ">
      <span>Copyright 2019-2022 <a href="" target="_blank">maoyz</a>版权所有.</span>
    </div>
  </div>
</template>

<script setup>
  import requestUtil from '@/util/request'
  import store from '@/store'
  import {ref} from 'vue'
  import qs from 'qs'
  import {ElMessage} from 'element-plus'
  import router from '@/router'
  import Cookies from 'js-cookie'
  import {encrypt, decrypt} from '@/util/jsencrypt'

  const loginRef = ref(null)

  const loginForm = ref({
    username : '',
    password : '',
    rememberMe : false
  })

  const loginRules = {
    username: [{ required: true,trigger:"blur", message: "请输入您的账号"}],
    password: [{ required: true,trigger:"blur", message: "请输入您的密码"}]
  }
  
  const handleLogin = () => {
    loginRef.value.validate(async (valid)=>{
      if (valid) {
        if (loginForm.value.rememberMe) {
          Cookies.set('username', loginForm.value.username, {expires : 30})
          Cookies.set('password', encrypt(loginForm.value.password), {expires : 30})
          Cookies.set('rememberMe', loginForm.value.rememberMe, {expires : 30})
        } else {
          Cookies.remove('username')
          Cookies.remove('password')
          Cookies.remove('rememberMe')
        }


        let res = await requestUtil.post('login?'+qs.stringify(loginForm.value));
        let data = res.data;

        if (data.status == 200) {
          const token = data.message;
          const userinfo = data.data.userinfo;
          const menuList = data.data.menuList;
          store.commit('SET_TOKEN', token)
          store.commit('SET_UERINFO', userinfo);
          store.commit('SET_MENULIST', menuList);
          router.replace("/")
        } else {
          ElMessage.error(data.message)
        }
      } else {
        console.log("验证失败")
      }
    })
  }


  function getCookies(){
    const username = Cookies.get('username')
    const password = Cookies.get('password')
    const rememberMe = Cookies.get('rememberMe')

    loginForm.value = {
      username : username === undefined ? loginForm.value.username : username,
      password : password === undefined ? loginForm.value.password : decrypt(password),
      rememberMe : rememberMe === undefined ? false : Boolean(rememberMe)
    }
  }

  getCookies();


</script>

<style lang="scss">
  .login{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background: url("../assets/images/login-background.jpg");
    background-size: cover;
  }

  .title {
    margin: 0px auto 30px auto;
    text-align: center;
    color: #707070;
  }

  .login-form{
    border-radius: 6px;
    background: #ffffff;
    width: 400px;
    padding: 25px 25px 5px 25px;

    .el-input {
      height: 40px;

      input {
        display: inline-block;
        height: 40px;
      }
    }

    .input-icon {
      height: 39px;
      width: 14px;
      margin-left: 0px;
    }
  }


  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }

  .login-code {
    width: 33%;
    height: 40px;
    float: right;

    img {
      cursor: pointer;
      vertical-align: middle;
    }
  }

  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
  }

  .login-code-img {
    height: 40px;
    padding-left: 12px;
  }
</style>